If you planning to travel to Oia Castle, Santorini, Greece, here is your 6-day travel weather forecast to make sure you have all the essentials needed during your stay. Start your day when the sunrises at 4:47 AM. The temperature feels like 64.65 with a humidity level of 61 so dress accordingly. Cloud coverage is 3 percent with visibility at 14.9 percent. Today’s UV index is 4, don’t forget the sunscreen if you need it! Today’s winds are traveling west-southwest at a speed of 13 MPH. At the end of the day don’t miss the sunset at 3:18 PM.